What is the midpoint of the line segment with endpoints (3.5, 2.2) and (1.5, -4.8)

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Given abcd ac=38 and ae=3x+4 find the value of x

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3